European house centipede (Scutigera coleoptrata) An introduced species from Spain. Australia has its own native centipedes, but Scutigera coleoptera are more common indoors. Likes bathrooms. Can grow up to six centimetres, gaining more legs as it does. Eats other small insects.

Wolf spider (Lycosidae) These common spiders do not make webs but wander through houses to find their prey. Their bites are generally not dangerous to humans. They are known as "vagrant hunters".

Credit:Peter Halasz

Black house spider (Badumna insignis) This critter builds untidy, funnel-like webs near windows and lights to catch flying insects attracted to the light. They are timid, and unlikely to bite. They are generally not dangerous to humans.